LCGB Forums

The ability to post messages is restricted to LCGB members. Any questions contact us at lcgbadmin@googlemail.com

GP Suspension

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Re: GP Suspension

Postby Rich Oswald » Mon Nov 18, 2024 11:00 am

Storkfoot wrote:
LambrettaMarky wrote:
Storkfoot wrote:Mark, as an aside to whether these dampers are too wide to fit, how do you have your dampers attached? Are mounts welded top and bottom?


Yes Paul. I have the top bracket in place and the bracket for the lower mount attaches to the spindle/disc link. It had dampers on before, just that they were a bit rubbish.

The protech units are handed too courtesy of their offset mounts.


Those Indian bottom brackets are made of cheese. I had a set once. One snapped on me going up a steep hill towards Tan Hill. I am not alone. This has happened to many scooterists.

I suggest that, whilst you have your forks out, get a set of fork links with damper mounts welded on. Presuming that the links you have are Indian rather than Italian or Spanish, do not get mounts welded on. Indian fork links tend to warp when welded. Again, this happened to me. It took me months to realise though. I couldn’t get my head around why my front tyre was wearing out on one side. It was because, every time I braked, the warped fork link was causing the front hub to go to one side.


+1
User avatar
Rich Oswald
 
Posts: 9588
Joined: Fri May 30, 2014 3:30 pm
Location: Wiseman From The East (East Of The Pennines That Is)

Re: GP Suspension

Postby Dazts1 » Mon Nov 18, 2024 9:30 pm

I think most will get away with a 310 rear shock. The worst (closest to the frame) it will ever be is on the stand. If you’ve got clearance on the stand then you’ll be good once off the stand as the motor drops forward as you roll forward off the stand. Unless you run crankcase induction then the carbs mounted behind the engine mount that can come close to the frame once off the stand. I run a 310 on mine.
My group 4 ran a 325mm protech rear shock without issue. Obviously no reed block though.
Dazts1
 
Posts: 409
Joined: Sat May 31, 2014 10:28 am
Location: Darlington

Re: GP Suspension

Postby LambrettaMarky » Wed Nov 20, 2024 4:56 pm

I'm not motivated enough to pull the forks apart again, but will definitely upgrade next time I'm in there - maybe for a disc conversion if all this doesn't give me a good enough front brake.

Thanks for the tip on the shock length too. I noticed when I checked the new Protech shock against whatever was on the GP, that the Protech was a bit longer. I presume the Indian jobbie was just short as well as being fairly inoperative as soaking up the bumps, so I'll settle with the standard length for now.

Almost went for a test ride today, but salt is down as is the temp' here..
User avatar
LambrettaMarky
 
Posts: 632
Joined: Thu Oct 26, 2023 3:19 pm

Previous

Return to Series 1, 2 & 3

Who is online

Users browsing this forum: No registered users and 21 guests